Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932825Ab3HNStb (ORCPT ); Wed, 14 Aug 2013 14:49:31 -0400 Received: from cassiel.sirena.org.uk ([80.68.93.111]:36275 "EHLO cassiel.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760026Ab3HNSt3 (ORCPT ); Wed, 14 Aug 2013 14:49:29 -0400 Date: Wed, 14 Aug 2013 19:49:16 +0100 From: Mark Brown To: Stephen Warren Cc: Alan Stern , Greg Kroah-Hartman , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Felipe Balbi , Grant Likely , devicetree@vger.kernel.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Message-ID: <20130814184916.GM2401@sirena.org.uk> References: <520BB0B4.4090400@wwwdotorg.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="L5nTHegdhbHhzmSD" Content-Disposition: inline In-Reply-To: <520BB0B4.4090400@wwwdotorg.org> X-Cookie: Your present plans will be successful. User-Agent: Mutt/1.5.21 (2010-09-15) X-SA-Exim-Connect-IP: 94.175.92.69 X-SA-Exim-Mail-From: broonie@sirena.org.uk Subject: Re: Non-enumerable devices on USB and other enumerable buses X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:57:07 +0000) X-SA-Exim-Scanned: Yes (on cassiel.sirena.org.uk) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2065 Lines: 49 --L5nTHegdhbHhzmSD Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Wed, Aug 14, 2013 at 10:30:44AM -0600, Stephen Warren wrote: > On 08/14/2013 10:14 AM, Alan Stern wrote: > > No, no -- this is exactly the point I was trying to make. The on-board > > hub _won't_ appear on the USB bus until the GPIOs are set. Therefore > > the callback to set the GPIOs needs to be at a different place, not > > when the device appears. > The device Mark was talking about is the controller end of the bus (EHCI > controller, or hub's downstream port) not the device end of the bus (any > USB device's upstream port). Actually it genuinely is a hub - it's not part of the controller, though the startup does need to be synchronised with the controller. It ends up parenting some other devices but that's not suchan issue. --L5nTHegdhbHhzmSD Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.20 (GNU/Linux) iQIcBAEBAgAGBQJSC9EpAAoJELSic+t+oim9FoEP/2XDDCmr+Ar/CvIhzmYn1tRp uGXnDvTzQ203SyEOhldvG03P1aCprrvdbhy5gBCPMGiAOctaoom4WdEk6IPKqqi6 AD5/Ev8xeNLlJsJlZvZBaN6qAzMWe9RfMjl1hNvIbG982aR+ym25psicAlq1mtww GvCnZ2Gd7e1Sp8bK87Z+z7HA3V/ztQFoTfPDrhg/TCfb8iI7LiyOTOddCEECfBfO CDuDcio4XQHy70E79xg7/0HRyALcmd2u4ATdGz1hnJKNUuuISKWKxtrWbDY7aDK/ Hnt/M6lhPDGkskuTbCRKBd80cwAgVlmcl1vXpVtiltpy+Vo9+7fnGh7VNg0OboXv DfGozA7moV5qAHNeld/rGeiAb8ZeSe+ddjJ8Ah/HGWWz/nEHIrV4lmsmpMNCt3qO zmdOQ3HdEe8ynUdKoVzppnT7r/DvaPfCeRmfsu0Ahrb53dw+na7KmlzI55kGFpXO nEOedH5KgsTecC9dnv711raOtTnbuKTzbMp/ETqBWg/xvI+ZtiHOZoqo+ZBn/v7q xpJVW4MyVCcpTQMFMNOanyB6zAqEXBkm6UXWB0qTuIn1A3DVCKOpodTBQnThfAQo TbheBJ4E/BnQFvSdRE3VWlngUFtdXzoHTZ9k65rlpP4ko4jr/jOgVZB8+6YKc8+U r1Ojc+2CSmTRa8apE/rU =C0RF -----END PGP SIGNATURE----- --L5nTHegdhbHhzmSD-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/